Blast-furnace tapping apparatus



yApgil 211, 1925.

E. E. BROSIUS BLAST FURNACE TAPPING APPARATUS Filed Jan. 3, 1921 3 Sheets-Sheet l E. E. BROSIUS BLAST EURNACE TAPPING 'APPARATUS April 21, 192s.

Filed Jari. s, 1921 s sheetslsneet 2 @l gag@ Y f@ .\\\A...\\ A u v Y /l/ff.

21, 1925; y l i I E.A E. BROSUS BLAST FuRNAc-E TAPPING APPARATUS mea Jan. s, 1921 s Smets-sheet s.

g E fe f/Mff .QN ....Iisl .e v .27 J7 A NNNN QN WN m u j y 1..... ----.A.. ..ww MMA Patented Apr. 21, 1925.

Appl'ication'led January 3, 1921. Serial No. 434,522.'

-, u c .f.. t l, r 1p1..

To all whom it .may eminem.'

VBe it flinoivii that 1I, Encan E. ll'ifnosins, -a Citizen y.of the ,Uv ted .,States, '..residing .at Pittsburgh, in the .dountyoi Allegheny'- and Statei of'-.-Pennsylvania,` have invent@ C1`- tain new and kuseful ImprevemeLnt-sin-Blast- Frnac'e (Tapping Apparatus, .of .which .the following is a full, clear, and exaetjdescription, reference ,being .had to. thsesselfparlying drawingaihrming part ,of this PQQLi-- cation, in .,Wl'lCh;

i iFigure liis, a .sectional `elevation 4.showing one form of apparatus ,embodying .iinvfention, certaio'f the partsbeingshwn. in dotted tlines .and some of the )parts Aheling shown. in anoftlicnposition in.A dotted '.linesif' :Figure -2 is a side `elevation shoWinfgthe means for .sus Lend1n,g;. the .apparatus tvvhen notinusef l -J `igure-3 is alongitudinal central section of one forni of drill embodying my invention, with portions thereof broken i away.

Figure 4 is a plan view7 partly broken away, of a .drill point.

same, takenj from opposite ends.

Figure `is an enlarged sectional view of a portion lof 'the apparatus' sho'vvn inFig- Nm3?. A .Y FigureS arserction on thelineVHlf- VIII of yFigures.-

My invention has relation toA blast furnace tapping apparatus, and is -designed "t`o providey a simple and eifectiveform of vapparatus for" use in `drilling outfthe" tapping holes of blast furnaces.`^ @Thefinvei'ition fis further designed to provide O apparatus Lo'l` this character lwhich can be readily, moved ,into and out of operative position; and which, when not in use, .occupi'eswa` ositin in which it is out of the Way` of'other operations about thefurnace. T'

The nature of my invention will bebest understood by rreference to the accompanyingfdratvings, in which-l have shown a pre- -ferred 4embodiment thereof, and which will nowl lie-described, itl being premised7 however,V thatvarius changesan be inade iiithe construction, arrangement and combination of the several parts'without.departing from the spiritand scope of myinvention as! de- `fined in ythe app'endedeclaims. i

{'In.` these drawingsythe"A numeral 2 designates af' portion of a'blastifurnace wallie?,

`ligures and are end viewswof `the one ofthe `mantle supporting columns; and 4 'the `.bustle pipe. 5`de`signate's the usiiiifl splash plate above the tappngontopenihg c iprocate in-' the "cylinder ,9, LAand Which-'is yrigidly lsecured j to an elongated 't hollo'iv sleeve 1,4 n {hichi arrangeli".A to reciprcate With the piston 13. At its forwardv-lendizthe sleeve 141s ri'fidly secured td'ftnut'member lhaving'aninternalthread, or projections, 16,V Whiehiareadapte'dytofthe grooves 17 `of 'a spirally groovedro'd.18flocatedwithn the sleevellt.` .At .itslforward endthe rod 18 :carriesa tdrill socket 19 adapted'ito receive the drillingtoolQ. 21 designatespa series ofclutchsb'alls which "are seated in openings in alspacer sleve22 andwhi'ch seat` at their inner sides against'a splitslefeve 23 surrounding the front end portion "oftheiiod L18.' i-Externallyfthese balls seat' Within a ASleeve ,24 having an internally tapered poi-- tion25 at its rear enti. l"

-The valve 11 is;automatically actuated h v any suitablev means,l suchl :its the tivo'armed lever '26,"one'ar'm owliich is connected s to the valveA` stemt'I 27' arid the' other amof lwhielris connected to 'a tappet rod 2S." This tappet rod extends through the nut"meni'ber "15 andv terminatesV atitsziorWard' end iiifthc head: 29. v"Ther'od .'18 is preferably 'provided [With a longitudinal `passage 3C) entend-ing y longitudinally therethrough, .theV firont Avend off this 'passage vbeing arranged' toA 'crnmuhicate with -t-lie" interior of" the hollowjdriiling tool. 20, and its rear 'endlbeing in crnmunicatin through va. port 31 "inthe zcap i825? l'with ai pipe '33 having' aliexible p'ortionti ivhic'h isconnected vviththeneXhaust 37 ofshthe valve The operation of the drill will be readily understood. Actuating fluid being admitted to the rear end of the cylinder 9, the piston 13 is moved forwardly, carrying with it the sleeve 14. This, through the nut 15, rotates the rod 18 and drilling tool 20, and at the same time advances said tool to the work. When the piston reaches the limit of its forward stroke, the nut 15 engages with the head 29 of the tappet rod 28, thereby actuating the lever 26 to reverse the valve 11. Upon the back stroke of the piston, the sleeve 14 and nut 15 are retracted to an extent equal to the full travel of the piston 13; butl the rod' 18 and the drilling tool Q0 have only a limited retraction owing to the fact that as soon as the clutch balls 21 engage with the tapered part 25 of the sleeve 24,

` said rod 18 will be clamped sufficiently tight to prevent any further backward movement, although still permitting it to be rotated by the backward movement of the nut 15.

The exhaust from the cylinder is caused to be discharged through the drill for the purpose of blowing out the clay as it is cut by the drill.

The drill is provided with a suspension system which consists of a flexible cord or cable` 38 attached thereto, which extends upwardly and over suitable guiding pulleys 39, and thence downwardly to a winding shaft 40 (see Fig. 2). The suspension sysvtem also comprises the two links 41 which are connected to the central portion of the drill casing at their lower ends, and at their upper ends are pivoted to a suitable bracket 42 secured to the bustle pipe 4.

43 designates a hook which is pivoted to the drill casing and which, when the drill is in operative position, as shown in full lines in Figure 1, is adapted to be engaged with the shaft 7a of the dogs 7, thereby holding the drill in proper relation to the tapping hole 6.

After the tapping operation is completed, the cord or cable 38 is wound on the shaft 40, thereby swinging the drill upwardly until it assumes the suspended position shown in full lines in Figure 2 and in dotted lines in Figure 1. In this position, it is suiiiciently elevated to be entirely out of the way of other operations around the base of the furnace.

My invention provides very simple and desirable apparatus for the purpose for which it is intended. It can be readily moved into'position and set in operation, after which it continues to operate until the tapping hole is drilled out, without necessil'tating the presence of workmen in the immediate vicinity of the tapping hole. Vhen the tapping out operation is finished, the

.device can be readily moved to its inoperative position, where it remains until it is again desired to use it.

1. Blast furnace tapping apparatus comprising a rotatable drill, and suspension means therefor comprising a plurality of links pivotally connected at each end and arranged to permit the drill to be swung into substantially horizontal tapping position or into substantially vertical inoperative position, substantially as described.

Blast furnace tapping apparatus comprising a drill, and suspension means therefor arranged to permit the drill to be swung into and out of tapping position, said suspension means comprising spaced links pivoted at their lower ends to spaced points on the drill and at their upper ends to spaced points on a bustle pipe, substantially as described.

3. Blast furnace tapping apparatus comprising a drill, and suspension means therefor arranged to permit the drill to be swung into and out of tapping position, -said suspension means comprising links pivoted at their lower ends to the drill and at their upper ends to an overhead support, whereby the drill may lie in substantially horizontal position below the support or in substantially vertical inoperative position at one side of the support, together with a flexible connection for raising and lowering the apparatus and for holding the drill suspended in its inoperative position, substantially as described.

4. Blast furnace tapping apparatus comprising a drill, spaced links forming a suspension for the drill and causing the same to move to an overhead position through a predetermined path, other suspending means for the drill, and spaced means for holding the drill temporarily in operative relationship to the tapping out hole of a blast furnace, substantially as described.

5. Drilling apparatus comprising a cylinder, a piston arranged to reciprocate in said cylinder, a sleeve to which the piston is secured, a nut carried by said sleeve, a spirally grooved rod engaging said nut and having a drill socket, and means controlled by said sleeve for automatically reversing the direction of travel of said piston, substantially as described.

G. Drilling apparatus comprising a cylinder, a piston arranged to reciprocate in said cylinder, a sleeve member to which the piston is secured, a nut carried by the sleeve member, and a spirally grooved rod engaging said nut and having a drill socket, together with means for directing the exhaust from said cylinder through said rod and drill socket, substantially as described.

7. Drilling apparatus comprising a cylinder, a piston arranged to reciprocate in said cylinder, a sleeve member to which the piston is secured, a nut carried by the sleeve member, and a spirally grooved rod engaging said nut and having a drill socket, vtogether with a conduit connected to the eX- haust of the cylinder and leading through said rod and drill socket, substantially as described.

8. Drilling` apparatus comprising a cylinder, a piston arranged to reciprocate in the cylinder, a sleeve member to which the piston is secured, a nut carried by the sleeve member, a spirally grooved rod engaging said nut and having a drill socket, and a clutch device for normally preventing the return movement of said rod upon the return stroke of the piston, substantially as described.

9. Blast furnace tapping apparatus, comprising a bustle pipe, suspension means pivotally connected at spaced points to said pipe, a drill pivotally connected to said suspension means, and means for swinging the drill into and out of operative position With the furnace, substantially as described.

In testimony whereof, I have hereunto set my hand.

EDGAR E. BROSIUS. 

